Leveling agent for dyeing terylene reuse water and preparation method thereof

The invention discloses a leveling agent for dyeing terylene reuse water and a preparation method of the leveling agent. The leveling agent comprises the following components in parts by weight: 40.0-60.0 parts of cashew nut phenol polyoxyethylene ether oleate, 10.0-20.0 parts of isomeric alcohol polyoxyethylene ether oleate, 15-30 parts of isomeric alcohol polyoxyethylene ether, 5-10 parts of dodecylbenzene sulfonic acid, 10-25 parts of a solvent and 15-40 parts of water. The liquid recycled water leveling agent can be prepared by mixing the components. According to the cardanol polyoxyethylene ether oleate, due to the synergistic effect of molecular chain benzene rings and ester groups, the electrolyte resistance of the cardanol polyoxyethylene ether oleate is improved compared with that of a common material A, meanwhile, the migration property and high-temperature dispersity of fabrics can be remarkably improved through the synergistic effect of the benzene rings and the ester groups, and therefore the car